What is sound isolation?

• A. Blending phonemes to form a word.
• B. Recognizing the same phoneme across different words or positions.
• C. Identifying which word rhymes with another.
• D. Identifying a single phoneme in a word, such as the initial /b/ in ball.

Answer: (D)

Sound isolation means hearing and identifying one individual sound in a word. For example, recognizing the initial sound in “ball” as /b/ shows isolating a single phoneme from the whole word. This skill helps children connect sounds to letters and break words apart for decoding. The other tasks involve blending sounds to make a word, noticing the same sound across different words or positions, or figuring out which word shares a rhyme, which are different phonemic awareness abilities. So identifying the initial /b/ in ball directly demonstrates sound isolation.